So after poking around a fair bit, reading lots of reviews, and learning as much as I could, I'd concluded a few things: I wanted an eSATA card as well as a USB 2/FW800 card as I hate hubs and I wanted lots of extra ports (I edit a fair amount of video). But it turned out that FW800 PCIe cards were all far slower than apple's onboard ports (and this was in the first gen mac pros, which have slower FW buses than the early 2008 mac pros). After shopping around, I noticed that NitroAV was selling pretty much the best value-for-money cards. I chatted with a sales rep online (very handy, by the way), and he cleared up. Their eSATA card is fully leopard compatible, SMART support, etc., no boot support (Most of the cards use the silicon graphics firmware, which does not have it), though it's not impossible to add later. With two external ports and 1 internal, it seems to be as good as Firmtek's equivalent card, but a bit cheaper: http://www.nitroav.com/product/472/ He then explained what the deal was with the slower FW800 cards. Apparently, until recently, FW800 PCIe and Expresscard adapters actually used a PCI->PCIe/Expresscard bridge, which severely throttled the speeds you could get, explaining why the speeds tested on Axaeon's equivalent card were so slow on Barefeats. He then went on to tell me that they would be deploying their PCIe native, nonbridged FW800 card in about a month or so. So it looks like I'll be buying their eSATA card, then checking back in later on to get the FW800 card. I'll be sure to let you all know what I think of the eSATA card once it's arrived and working.